kernel/git/stable/linux.git/fs/btrfs/compression.h, branch linux-5.8.y

btrfs: unexport btrfs_compress_set_level()

2020-05-25T09:25:37+00:00

btrfs_compress_set_level() can be static function in the file compression.c. Reviewed-by: Johannes Thumshirn Signed-off-by: Anand Jain Reviewed-by: David Sterba Signed-off-by: David Sterba

btrfs: compression: remove ops pointer from workspace_manager

2019-11-18T11:46:59+00:00

We can infer the ops from the type that is now passed to all functions that would need it, this makes workspace_manager::ops redundant and can be removed. Reviewed-by: Johannes Thumshirn Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba

btrfs: compression: inline free_workspace

2019-11-18T11:46:59+00:00

Replace indirect calls to free_workspace by switch and calls to the specific callbacks. This is mainly to get rid of the indirection due to spectre vulnerability mitigations. Reviewed-by: Johannes Thumshirn Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba

btrfs: compression: pass type to btrfs_put_workspace

2019-11-18T11:46:59+00:00

We can infer the workspace_manager from type and the type will be used in the following patch to call a common helper for free_workspace. Reviewed-by: Johannes Thumshirn Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba

btrfs: compression: inline alloc_workspace

2019-11-18T11:46:58+00:00

Replace indirect calls to alloc_workspace by switch and calls to the specific callbacks. This is mainly to get rid of the indirection due to spectre vulnerability mitigations. Reviewed-by: Johannes Thumshirn Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba

btrfs: compression: pass type to btrfs_get_workspace

2019-11-18T11:46:58+00:00

We can infer the workspace_manager from type and the type will be used in the following patch to call a common helper for alloc_workspace. Reviewed-by: Johannes Thumshirn Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba

btrfs: compression: inline put_workspace

2019-11-18T11:46:58+00:00

Similar to get_workspace, majority of the callbacks is trivial, we don't gain anything by the indirection, so replace them by a switch function. Trivial callback implementations use the helper. Reviewed-by: Johannes Thumshirn Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba

btrfs: compression: inline get_workspace

2019-11-18T11:46:58+00:00

Majority of the callbacks is trivial, we don't gain anything by the indirection, so replace them by a switch function. ZLIB needs to adjust level in the callback and ZSTD workspace management is complex, the rest is call to the helper. Reviewed-by: Johannes Thumshirn Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba

btrfs: compression: inline cleanup_workspace_manager

2019-11-18T11:46:57+00:00

Replace loop calling to all algos with a list of direct calls to the cleanup manager callback. When that becomes trivial it is replaced by direct call to the helper. Reviewed-by: Johannes Thumshirn Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba

btrfs: compression: let workspace manager cleanup take only the type

2019-11-18T11:46:57+00:00

With the access to the workspace structures, we can look it up together with the compression ops inside the workspace manager cleanup helper. Reviewed-by: Johannes Thumshirn Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba